Even outside of that use-case, Springheart Nantuko is a fantastic creature that can generate absurd amounts of value regardless of what you may or may not bestow it upon
The second card from this article is Courageous Outrider, a 3/4 Human Scout that can be cast for three generic and one white mana
They cannot be used in official tournaments and have no collectible worth regardless of the Pokmon featured
Pokemon stopped using Kadabra in the TCG after Uri Geller sued them over the Pokemons likeness to his persona
Marvin, Murderous Mimic Marvin, Murderous Mimic rewards creative deck building, giving you the freedom to experiment with activated abilities from a variety of creatures
For example, say a Bear creature enters the battlefield and, later in the turn, gains the Frog creature type